... .NameStainless steel flanges 2.Standard: GB14976-2002, GB13296-2007, JIS, AISI, DIN, EN3.Size: 1/2" - 84"DN10-DN20004.Pressure: ND6 ... -secondary10.Alloy Or Not :Non-alloy11.Technique:forged,casting12.Certification:ISO,QMS,DNV,KR,ABS,TUV,Lloyd's Register,BV.13 ... ability.2.Reasonable price.3.Excellent quality.4.Various size. AISI,ASTM,JIS,DIN,EN Stainless steel flange